A . are seated with seat belts on and doors shut
B . are seated with seat belts on and doors open
C . are to shift to one side to right it
D . escape from the craft
[名词解释] survival analysis
[单选题]Survival Kit指的是()。A . 急救箱B . 应急医疗箱C . 卫生防疫包D . 救生包
[单选题]The survival of the civilization as we know is_________ threat.A. withinB. underC. towardD. upon
[单选题]Thesurvivalofcivilizationasweknowitis_____threat.(A)within(C)towards(B)under(D)upon
[单选题]Thesurvivalofcivilizationasweknowitis_____threat.(A)within(C)towards(B)under(D)upon
[名词解释] 生存概率(survival probability)
[名词解释] survival factors (存活因子)
[名词解释] 生存率(survival rate)
[单选题]A. life B existence C survival D maintenance
[名词解释] 边际收益递减律(Law of diminishing marginal returns)